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Flanged Knife Gate Valve

  • Size Range:DN50-400
  • Pressure:PN1.0/1.6mpa
  • Body Materials:Cast iron,Ductile Iron

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ADVANTAGES

Lugged Knife Gate Valve Feature

1. Knife gate valve opening and closing part is the valve plate, the plate movement direction is perpendicular to the direction of the fluid. Knife gate valve can only be fully open and fully closed, can’t be used for adjusted and the throttle.
2.The valve plate has two sealing surfaces. The two sealing surfaces of the most common gate valve forming the wedge, the wedge angle various according to the valve parameters, usually is 50. Wedge knife gate valve plate can be made into a whole part , called the rigid gate plate; also be made to that can produce small quantities of deformation in order to improve its production process, to make up the sealing surface angle deviations arising during processing, this plate called resilient plate. The seal can only rely on media pressure to seal, which rely on media pressure to ram pressure to the sealing surface of the other side of the seat to ensure the seal, which is self-sealing. 

Product Advantage

1.The valve body is made of precision casting, the precise geometry makes the north of the valve body not need any finishing, so as to ensure the tightness of the valve.

2.The body is made of ductile iron QT450-10, shall not be broken by transportation, collision or installation.

3.The valve body adopts streamlined design, so that the medium moves straight in the valve cavity, the flow resistance is smaller and the flow area is larger.

4.The valve adopts bidirectional sealing design, and the installation direction and medium flow direction are not limited.

5.The inside and outside of the valve bodyadopt powder epoxy resin electrostatic coating, which can effectively prevent corrosion and rust caused by contact between valve body and medium, and can be used in sewage system.

6.The valve plate adopts high-quality overall rubber coating, the use of advanced technology makes the vulcanized rubber vulcanization after the valve plate to ensure accurate geometry, and the rubber and ductile iron gate connection is firm and not easy to fall off with good elastic memory, so as to ensure the stable performance of the valve sealing.

7.The bottom of the valve body adopts no groove design, and does not cause accumulation of impurities or dirt, thereby effectively avoiding the leakage caused by impurities scratching of the valve seat.

8.The valve stem is designed with three "O" ring seal. The friction resistance of the switch can be reduced, water leakage is greatly reduced, and the sealing ring can be replaced without cutting off water.

9.The screw made of aluminum bronze material, so the switch is more smooth, not easy to rust, difficult blockage.

10.The overall of valve adopt non rising stem design, reducing the valve, especially large diameter valve installation space.

11.For the installation of valves using in deep well and underground pipe, deep well connecting cap or lengthening rod mechanism can be provided according to customer requirements.

12.YUMING VALVE company specialized intentions since 1972, has a professional production, sales, research, after-sales team, is your strong backing of sales and use.

PARAMETER INFORMATION

.

NUM

Name

Material

1

Body

ductile iron

2

Bonnet

ductile iron

3

Gland Nuts

ductile iron+EPDM

4

Wedge

ductile iron+EPDM

5

Lifting nuts

Brass

6

Adjustable stem

SS420

7

Clamp ring

Brass

8

"O" Ring

Silicone

9

Hand wheel

ductile iron

10

Bolt

Carbon steel

11

Ring

EPDM

12

Bolt

SS304

 

Size

DN(MM)

L

D

D1

D2

D0

N-Th

d

H1

50

48

165

125

99

180

4--16

18

290

65

48

185

145

118

200

4--16

18

310

80

51

200

160

132

220

8--16

18

350

100

51

220

180

156

240

8--16

18

405

125

57

250

210

184

260

8--16

18

450

150

57

285

240

211

280

8--16

23

510

200

70

340

295

266

300

12--20

23

610

250

70

405

355

319

340

12--24

27

765

300

76

460

410

370

380

12--24

27

820

350

76

520

470

429

400

16--24

27

970

400

89

580

525

480

450

16--27

30

1024

 

 
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